杂交早稻产量性状和品质性状的相关性研究

对7个恢复系及其与6个不育系配组的42个杂交组合的11个产量性状间和8个品质性状间作了相关分析，并对产量性状与品质性状间进行了典型相关分析，从相关分析可以看出；高的整精米率，大的长宽比和低的低的垩白度之间有相互促进的作用，所以三者可以同时进行改良，从典型相关分析可以看出：播始历期载荷量较小，所以在一定的生育期内，实现早稻的高产是可能的，糙米率，精米率和垩白度的载荷量较小。它们的改良可以与产量性状的改良同步进行。粒宽和长宽比载荷量的负值较高，我们在选育时要协调粒宽，长宽比与产量之间的关系。

Study on Correlation of Yield Traits and Quality Traits of Hybrid Early Rice

The correlation between11 yield traits and 8 quality traits of 42 combinations of 7 CMS and 6 restorers was analyzed. The results revealed that the load capacity of seeding to heading days was low and there have stimulated effect each other among high total milled rice, big aspect ratio and low chalkiness ratio. That means high-yield combination can be selected and bred in a certain childbearing period, and the high total milled rice, big aspect ratio and low chalkiness ratio could be improved at the same time. The results also showed that the load capacity of rough rice ratio, milled rice ratio and chalkiness ratio were low. The three traits can be improved together with yield characters. But the negative load capacity of granular width and aspect ratio were high, that means granular width, aspect ratio and yield should be developed simultaneously.